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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Allows extension of penis without fibro-elastic penis






2. What about the sperm for a bull which has been castrated but still has testicles?






3. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






4. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






5. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






6. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






7. 30 hours after estrus begins






8. To remove/separate testicles from animal's body before animal reaches puberty






9. 1-3 days






10. (male) pushes the testes outward toward the legs for a cool-down off of the body






11. Important 'landmark' during palpation






12. 10-37 (21) days






13. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






14. Parturition is controlled by...






15. Animals which have only one estrous cycle (ex: dog - fox)






16. Superior genes are _______ to multiply






17. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






18. Look for infection - split - and rupture of the penis






19. Why does estrus happen before ovulation?






20. Luteolysis happens because of the ____________ hormone






21. Scar tissue plugs up chambers of udder






22. The more stressed out the male is - the less sperm he is going to produce






23. 336 days






24. 19-23 (21) days






25. Male on one pin and female on other side






26. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






27. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






28. Larger the cow - more milk is produced; smaller the cow - less milk is produced






29. Check feet and legs - look for masculine traits in build such as crest and muscling






30. 19-23 (21) days






31. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






32. Duct through penis that carries sperm and urine






33. Help to signal hormone levels which we need both in the brain right next to each other.






34. Look for infection - split - and rupture of the penis






35. Prevent the cow from getting an infection from the calve






36. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






37. 19-23 (21) days






38. Front feet and head first. (except for hogs and dogs)






39. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






40. Failure to have one testis (gonad) to descend






41. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






42. (LH) causes female's egg to break (her period)






43. The more stressed out the male is - the less sperm he is going to produce






44. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






45. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






46. Sperm is produced here






47. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






48. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






49. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






50. Luteolysis happens because of the ____________ hormone







Sorry!:) No result found.

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